If you have changed the super user id then you have following choices. You can see current users id in;
- Joomla admin > Users > User Manager> see end of each user line.
- Joomla admin > Components > K2 > Users > see end of each user line.
A. Create a new k2 or joomla super user with userid 42.
To do this create a new super user then by using phpmyadmin change userid to 42.
B. Change current super user id to 42.
1. Open your Joomla database using PHPMyadmin tool.
2. Open "jos_users" table,
3. Find record with "Super User" name and click on edit icon,
4. Change Super User id value to 42 and click on "Go" button,
5. Open "jos_user_usergroup_map" table.
6. Find the record with "group_id" value 8, change "user_id" value to 42, then click on "Go" button,
7. Logout and login again.
See you around...